Novel U-shaped liquid crystals for electro-optic devices

Atsushi Yoshizawa; Juri Rokunohe; Shinpei Segawa; Fumitaka Ogasawara

doi:10.1117/12.644405

23 February 2006 Novel U-shaped liquid crystals for electro-optic devices

Atsushi Yoshizawa, Juri Rokunohe, Shinpei Segawa, Fumitaka Ogasawara

Proceedings Volume 6135, Liquid Crystal Materials, Devices, and Applications XI; 613508 (2006) https://doi.org/10.1117/12.644405
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

Abstract

We would like to report here novel molecular design for electro-optic liquid crystal devices, i.e. catechol derivatives for reduction in threshold voltage and binaphthyl derivatives for blue phases with a wide temperature range. A threshold voltage of a nematic mixture consisting of a host liquid crystal and 10wt% of a catechol derivative, 1-{6-(3,4-difluorophenyloxy)hexyloxy}-2-{6-[4-(4-fluorophenyl)phenyloxy]hexyloxy}benzene, was markedly lower than that of the host LC. The U-shaped compound was found to induce larger dielectric anisotropy in the nematic phase of the mixture than the corresponding monomeric compound. Then, we prepared a homologous series of novel chiral dimeric compounds, (R)-2,2'-bis{6-[4-(2-(2-fluoro-4-butyloxyphenyl)pyrimidine-5-yl)phenyloxy]alkyloxy}-1,1'-binaphthyl. The binaphthyl derivatives with an even number of atoms in the spacers showed a chiral nematic phase, however, those with an odd number of atoms showed a blue phase in a relatively wide temperature range between the isotropic and smectic A phases. We discuss structure-property relationships in the U-shaped system.

Citation Download Citation

Atsushi Yoshizawa, Juri Rokunohe, Shinpei Segawa, and Fumitaka Ogasawara "Novel U-shaped liquid crystals for electro-optic devices", Proc. SPIE 6135, Liquid Crystal Materials, Devices, and Applications XI, 613508 (23 February 2006); https://doi.org/10.1117/12.644405

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available